If you are a high school student genuinely curious about chemistry, there’s a lot more you can explore beyond what your school lab offers. Online chemistry courses for high school students give you a real chance to go deeper. Virtual chemistry programs are structured academic experiences designed to help you build the kind of scientific thinking that you will use in college and beyond.

What makes online programs particularly worth considering is the access they offer. You don’t need to be near a top research university to learn from one. From anywhere in the world, you can attend lectures delivered by faculty from MIT, Stanford, or Oxford, complete assessed coursework, earn credentials, and get a feel for what undergraduate science looks like. 

How to choose the right online chemistry course for high school students?

Courses vary in their structure, extent of academic exposure, teaching style, and ease of access. The right online chemistry course will be able to meet you where you are in your academic experience while also helping you move beyond the high school level with ease. The best courses combine practical exposure with theoretical instruction, letting you apply chemistry concepts to hands-on exercises, challenges, experiments, and research work!

You could be working through organic synthesis mechanisms, learning how spectroscopy helps identify unknown compounds, or exploring lab instrumentation and safety protocols that most students don’t encounter until college. So whether you are trying to figure out if chemistry is the right major for you, looking to strengthen your college application, or simply want to go further than your school curriculum allows, an online chemistry course can be a solid next step.

To help you sort through the options, we have put together a list of 15 online chemistry courses for high school students. Our selection focuses on factors like academic rigor, the quality of instruction, and the extent of academic exposure the courses offer.

For adjacent opportunities, consider the in-person chemistry course.

15 Online Chemistry Courses for High School Students

1. MIT OpenCourseWare’s Principles of Chemical Science

Location: Online
Cost: Free
Dates: Self-paced; available year-round
Application deadline: No deadline; open access
Eligibility: Open to all; one year of high school chemistry is recommended

As one of the more academically rigorous online chemistry courses for high school students, MIT OpenCourseWare’s Principles of Chemical Science is a self-paced course that uses the same materials as MIT freshmen chemistry coursework. You will learn through lecture videos, problem sets, and exam solutions covering topics like atomic and molecular electronic structure, thermodynamics, acid-base and redox equilibria, chemical kinetics, and catalysis.

The course covers the fundamentals of both inorganic and organic chemistry. It also connects chemistry to adjacent fields. So, you will see how chemical science principles show up in environmental science, atmospheric chemistry, and even biology. 

Why it stands out: The course materials come directly from MIT’s actual freshman chemistry syllabus, offering you a realistic look at university-level expectations before you get there.

2. Immerse Education’s Online Chemistry Summer School

Location: Online
Cost: Varies; summer school scholarships available through our bursary programme
Dates: Flexible; year-round enrolment
Application deadline: Rolling; multiple cohorts every year
Eligibility: Students aged 13-18 from around the world

The Online Chemistry Programme offers high school students the opportunity to conduct chemistry-focused research with tutors from Oxford, Cambridge, and Ivy League universities. You will work with your tutor to explore a chemistry topic of your choice in depth and write an academic research paper. The programme is offered in 1:1 and small group formats, and you can choose to pursue accredited options where available. .

The chemistry pathway covers areas such as organic chemistry, physical chemistry, biochemistry, materials science, and chemical analysis. At the end of the programme, you’ll receive a written evaluation from your tutor, an opportunity to publish your research, and an invitation to present at the Immerse Online Symposium.

Why it stands out: It lets you work closely with leading academics and write a structured scientific research paper, with the option to earn UCAS points or U.S. college credit.

3. Duke University’s Introduction to Chemistry: Reactions and Ratios

Location: Online via Coursera
Cost: Free to audit; certificate available with Coursera subscription
Dates: Self-paced course available year-round; typically requires two weeks at 10 hours per week to complete
Application deadline: Open enrolment
Eligibility: Open to all; no prior chemistry experience required

Taught by Duke University professors, Introduction to Chemistry: Reactions and Ratios is a self-paced course that covers the basics of the discipline to help you build a foundation for future science studies. Over seven modules, you will learn about chemical reactions, stoichiometry, the periodic table, periodic trends, and nomenclature, the building blocks that show up in virtually every chemistry course after this one.

The course includes 12 assignments over an estimated two weeks, helping you track your progress and revisit learned concepts. You will also engage in forum discussions, work on problem sets, and complete module-specific exercises.

Why it stands out: You will learn directly from a Duke University professor, which means the instruction quality mirrors what you’d get in an actual college classroom.

4. Johns Hopkins University’s Applications of Chemistry in Medicine

Location: Online
Cost: $1,950 plus $85 application fee; financial assistance available
Dates: July 6-17
Application deadline: Rolling admissions; early and regular decision deadlines in March – April
Eligibility: Students worldwide entering grades 10-12 with a minimum cumulative 3.0 GPA; a background in chemistry and biology is strongly recommended

The Applications of Chemistry in Medicine course, a part of the two-week online pre-college program offered by Johns Hopkins University, is designed to help you see how chemistry operates at the center of modern healthcare. You will explore how chemical analysis and compound synthesis drive drug development, how new therapeutic compounds are designed and tested, and how chemistry shapes entire industries from pharmaceutical sciences and materials science to forensic chemistry and cosmetics.

The course is built around daily and weekly assignment deadlines that closely mirror real university expectations. It runs primarily asynchronously, so you can work through the materials on your own schedule, but your instructor will also run optional live sessions, including office hours, group discussions, and supplemental lectures, which give you the opportunity to connect with faculty in real time. 

Why it stands out: It lets you explore chemistry’s medical and pharmaceutical applications following the academic pacing of undergraduate courses rather than typical self-paced courses.

5. Harvard University’s University Chemistry

Location: Online via edX
Cost: Approximately $1,250; discounts may be available
Dates: Self-paced course series available year-round; typically requires nine months to complete
Application deadline: Rolling enrolment
Eligibility: Open to all; some prior chemistry background may be helpful

Harvard University’s University Chemistry program is a four-course sequence covering thermodynamics, entropy, chemical equilibria, acid-base and redox reactivity, and electrochemistry. You will explore core topics with a focus on their connection to real-world problems in global energy and climate science.

You will learn about the chemistry behind solar cells, energy storage systems, and industrial electrochemistry, and understand how physical chemistry connects to climate change at a mechanistic level. Each course in the sequence builds directly on the previous one, which means by the end, you will have worked through the equivalent of a full introductory physical chemistry curriculum at the university level.

Why it stands out: It covers physical chemistry concepts taught by a Harvard professor with a focus on real-world applications in energy and climate, helping you prepare for undergraduate academics.

6. Stanford Pre-Collegiate Summer Institutes’ Topics in Biochemistry

Location: Online
Cost: $3,200
Dates: July 6-17
Application deadline: March 13th
Eligibility: Students in grades 9-11 at the time of application who have completed a high school biology course; open to domestic and international students

Topics in Biochemistry is a two-week live online Stanford University course designed for students who want to prepare for advanced biochemical science academics. You will learn about the four essential macromolecules: proteins, carbohydrates, lipids, and nucleic acids, and explore how their dysfunction connects to real health conditions like diabetes, antibiotic resistance, and cancer. You will learn through lectures, asynchronous assignments, small group activities, and presentations.

You will also work on a final project, for which you will choose a topic that synthesizes concepts across biochemistry options, such as CRISPR-Cas9, mRNA vaccines, the keto diet, or the biochemistry behind why grapefruit interacts with certain medications. The format is discussion-heavy, instructor-led, and focused on original thinking, designed to reflect university-level instruction and expectations. 

Why it stands out: You will explore the interdisciplinary field of biochemistry while connecting with Stanford instructors and a globally diverse cohort in an accessible, virtual environment.

7. Carnegie Mellon University Open Learning Initiative’s Chemistry 1 Course

Location: Virtual
Cost: None
Dates: Self-paced
Application deadline: Open enrolment
Eligibility: Open to all

Carnegie Mellon’s Open Learning Initiative offers online courses that are designed for learners of all ages. The Chemistry 1 course covers topics usually covered in the first semester of a college-level General Chemistry course. Through text, interactive sessions, examples, activities, simulations, and other exercises, you will explore core topics, from basics like properties of matter, elements, and compounds to advanced theories of covalent bonding.

You will also have access to practice problems, which come with feedback and hints to help you learn and improve your problem-solving skills. End-of-unit quizzes will help you track your progress. The free course includes only learning materials, not credits or a certificate, helping you learn without the pressure of grades or fees.

Why it stands out: This free course helps you progressively build chemistry knowledge while exploring concepts covered in college-level chemistry courses.

8. UCLA Summer Sessions’ Online Chemistry Courses

Location: Online
Cost: $420/unit + additional registration and documentation fees apply; financial aid available
Dates: Multiple sessions during the summer; check dates here
Application deadline: Varies by session
Eligibility: High school students, ages 15 and up by June 22nd, with a minimum 3.0 GPA (unweighted); high school chemistry and 3.5+ years of mathematics are recommended for CHEM 14A and 20A; International students can apply

UCLA Summer Sessions gives high school students the chance to take actual UCLA undergraduate chemistry courses alongside currently enrolled UCLA students. Three online chemistry courses are open to high school applicants: General Chemistry for Life Scientists I (CHEM 14A), Chemical Structure (CHEM 20A), and for students who have already completed a college-level introduction to chemistry, General Chemistry for Life Scientists II (CHEM 14B).

You will learn from UCLA faculty, exploring material at the same academic standard as the on-campus courses, covering topics such as molecular structure, chemical bonding, reaction mechanisms, and the foundational principles of organic chemistry. You will attend live classes, engage in discussions, and earn transferable college credits.

Why it stands out: You will take the same UCLA undergraduate chemistry course as current university students, getting a realistic, credit-bearing experience of what a science-heavy college schedule actually demands.

9. Oregon State University Ecampus’s General Chemistry Online

Location: Online
Cost: $409 per credit
Dates: Summer term starts June 22nd; courses offered across multiple terms year-round
Application deadline: May 1st for the summer term
Eligibility: Open to nondegree-seeking students worldwide, including high schoolers; working knowledge of high school algebra, logarithms, and scientific notation is required

Oregon State University’s Ecampus General Chemistry course series is a lab-focused online option for students who want a real, credit-bearing university chemistry experience. The courses are developed and taught by OSU College of Science faculty who also teach college students on campus. All courses include a virtual lab component built on a simulation platform, and each lab follows a structured three-part format.

You will begin with a conceptual introduction, carry out a step-by-step virtual chemistry experiment using digital tools to collect and analyze data, then discuss your findings with peers and receive real-time feedback from the instructor. Two sequences are available depending on your goals: a non-science majors track and a more rigorous science majors track.

Why it stands out: It offers access to a virtual lab platform specifically designed to replicate the hands-on experience of a campus chemistry lab.

10. Arizona State University’s Introductory Chemistry (CHM 101)

Location: Online
Cost: $425 (out of which, you will pay $400 only if you pass)
Dates: Starts on June 16th or August 18th and runs for 8 or 16 weeks
Application deadline: Rolling enrollment
Eligibility: Open to all; College Algebra/College Mathematics is recommended

Arizona State University’s CHM 101 is an online, for-credit chemistry course that covers fundamentals such as atoms and matter and builds before moving toward chemistry applications in biology, health science, and materials science. You will explore how the molecules of life are formed, how blood pH is regulated, and how atomic and molecular behavior explains the properties of materials around you, including applications in alternative energy.

The course includes a dedicated lab component that accounts for 25% of your final grade. You will also track your progress through learning activities, quizzes, a midterm, and a final exam.

Why it stands out: You will dive into chemistry while earning four transferable ASU college credits and completing a lab component, experiencing university-level rigor early on.

11. Arizona State University’s General Chemistry for Engineers (CHM 114)

Location: Online
Cost: $425 (out of which, you will pay $400 only if you pass)
Dates: Starts on August 18th and runs for 8 weeks
Application deadline: Rolling enrollment
Eligibility: Open to all; Precalculus is strongly recommended

CHM 114 at Arizona State University is a chemistry course focused on the field’s applications in engineering. You will learn core chemistry concepts and explore how chemists and engineers would use these concepts to tackle real problems.

You will explore the chemistry behind battery limitations, mobile phone materials, glass properties, and how atoms and molecules combine to produce materials with specific, designed characteristics. The curriculum includes a full lab component (25% of your grade), a midterm, and a final exam. At the end, you will earn four transferable ASU college credits.

Why it stands out: It introduces you to chemistry through the lens of engineering, preparing you for interdisciplinary STEM work.

12. MGH Institute of Health Professions’ Chemistry for the Health Professions

Location: Online via edX
Cost: $360 – $400
Dates: Self-paced course series available year-round; typically requires 5 months to complete
Application deadline: Rolling enrollment
Eligibility: Open to all; designed for learners working toward college-level chemistry

Chemistry for Health Professions is a four-course MicroBachelors program from the MGH Institute of Health Professions that covers chemistry and its role in healthcare and the life sciences. The curriculum is split into individual courses on foundations of thermodynamics, elements/chemicals and reactions, organic compounds, gases, and electrochemistry, with each course building on the one before it.

You learn about principles of different branches of chemistry and learn how to predict properties of gases, biomolecules, periodic trends, and chemical reactions. You will learn through lectures, practice problems, and assessments that mirror the expectations of credit-bearing college-level coursework.

Why it stands out: It lets you learn chemistry basics relevant to pursuing a career in healthcare, making it an interdisciplinary, professional preparatory course.

13. One Schoolhouse’s Summer Chemistry

Location: Online
Cost: $2,365; waivers may be available
Dates: June 15th – August 7th
Application deadline: June 19th
Eligibility: High school students around the world who have completed Algebra I

One Schoolhouse’s Summer Chemistry is an eight-week, online course that lets you explore the field well beyond what most introductory high school chemistry classes cover. You will start with core concepts like measurements, atomic theory, bonding, chemical reactions, and stoichiometry, and move on to acid-base chemistry, solutions, and thermochemistry. Unlike a self-paced MOOC, this course is class-paced with a real instructor, a cohort of peers, and actual grading.

The practical component is built directly into the curriculum, with virtual laboratory exercises, topic-based presentations, and a project requiring you to animate a chemical reaction. The activities are designed to develop analytical thinking and scientific writing skills. You will have access to discussion boards and video chats throughout the session. On completing the course, you will receive full-year course credit from an accredited institution.

Why it stands out: It is one of the few online chemistry programs that pairs real academic credit, a structured cohort, and an actual lab component all delivered asynchronously, so you can participate from anywhere.

14. DelftX: Pre-University Chemistry

Location: Online via edX
Cost: Free to audit; paid certificate available.
Dates: Self-paced; requires five weeks to complete
Application deadline: No formal deadline
Eligibility: Students around the world who have taken high-school-level chemistry and high-school-level calculus

This five-week, self-paced online course reviews the fundamentals of chemistry at the level expected in a first-year university science or engineering degree. The course is organized into three modules: Energy Transition, Chemistry of Health, and New Materials, covering general chemistry, organic chemistry, and inorganic chemistry, respectively, and connecting each topic to real-world applications.

You will work through 4–5 hours of content per week, including video lectures, readings, assignments, and community discussions, all of which are free to access. A paid certificate is available if you want to formally document your completion.

Why it stands out: You will explore chemistry through applied, real-world themes, gaining insights into problems that scientists and engineers are working on today.

15. Rice University’s General Chemistry: Concept Development and Application

Location: Online
Cost: Free to enroll; a paid certificate is available
Dates: Year-round start dates with flexible scheduling; typical commitment of two weeks
Application deadline: Not specified
Eligibility: Open to all; international students are eligible

This self-paced online course covers the equivalent of a full-year, two-semester university general chemistry course across 12 modules. You will explore core chemical science concepts through experimental observations and scientific reasoning, following an approach called Concept Development Studies, developed at Rice University.

Topics range from atomic structure, bonding, and molecular geometry to thermodynamics, chemical kinetics, and equilibrium. You will complete 11 graded assignments and use a free online textbook provided through Rice’s Connexions project. 

Why it stands out: Unlike most introductory chemistry courses, this one teaches you to think like a scientist by walking you through the reasoning and observations that led chemists to their conclusions.

Let Chemistry Learning Shape Your Academic Future

Chemistry becomes more meaningful when formulas, reactions, and lab ideas connect to future degrees, research opportunities, and demanding science pathways.

The online chemistry courses for high school students listed here can introduce university-level topics, including biochemistry, medicine, engineering, energy, and materials science.

As you compare courses, notice which formats build confidence: live teaching, assessed projects, virtual labs, college credit, research papers, or self-paced study.

Ready to feel prepared for university science and stronger applications? Turn to our University Preparation blogs for guidance on study skills, subject choices, admissions, and academic readiness.